{"id":1372,"date":"2015-04-01T21:37:44","date_gmt":"2015-04-01T21:37:44","guid":{"rendered":"http:\/\/alexandrewack.fr\/?page_id=1372"},"modified":"2017-11-27T18:21:09","modified_gmt":"2017-11-27T18:21:09","slug":"memento-de-visserie","status":"publish","type":"page","link":"http:\/\/alexandrewack.fr\/?page_id=1372","title":{"rendered":"Visserie, Boulonnerie et \u00e9crous"},"content":{"rendered":"<h3 style=\"text-align: left;\">Ici un bon cours PDF sur les VIS :\u00a0<a href=\"http:\/\/metaluver.wifeo.com\/documents\/les-vis-pdf.pdf\" target=\"_blank\" rel=\"noopener\">http:\/\/metaluver.wifeo.com\/documents\/les-vis-pdf.pdf<\/a><\/h3>\n<p>Une petite vid\u00e9o sur pour comprendre le dessin d&rsquo;une vis en construction:<br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/SfRkbTOWzwI\" width=\"342\" height=\"342\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\n<b>1. Vis d&rsquo;assemblage \u00e0 m\u00e9taux <a href=\"http:\/\/www.zpag.net\/Tecnologies_Indistrielles\/visserie.htm\">ici\u00a0<\/a><\/b><\/p>\n<p><span style=\"font-family: Verdana;\">Le serrage le plus \u00e9nergique est obtenu par les t\u00eates H et Q (Q est peu utilis\u00e9e en m\u00e9canique) puis par les vis CHC qui pr\u00e9sentent l&rsquo;avantage de pouvoir \u00eatre log\u00e9es ou noy\u00e9es dans un chambrage. Les grades A et B indiquent des tol\u00e9rances pr\u00e9cises, C des tol\u00e9rances larges.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Les vis H et CHC existent en boulonnerie haute r\u00e9sistance.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Les t\u00eates coniques ou frais\u00e9es, peu utilis\u00e9es en m\u00e9canique, permettent des centrages \u00e9ventuels.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Les vis \u00e0 fente, \u00e9conomiques, assez utilis\u00e9es dans les petites dimensions, ont pour elles la simplicit\u00e9 (serrage par tournevis) ; de plus les t\u00eates peuvent \u00eatre facilement noy\u00e9es.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Suivant les dimensions, la tige peut \u00eatre compl\u00e8tement ou partiellement filet\u00e9e et le diam\u00e8tre de tige r\u00e9duit ou non.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Remarque : il existe d&rsquo;autres formes de t\u00eates ; cylindrique bomb\u00e9e \u00e0 empreinte cruciforme, cylindrique \u00e0 6 lobes ou \u00e0 empreinte torx, po\u00ealier fendu&#8230;.<\/span><\/p>\n<h3 style=\"text-align: left;\"><a href=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1399\" src=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser1-291x300.jpg\" alt=\"visser1\" width=\"439\" height=\"453\" srcset=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser1-291x300.jpg 291w, http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser1-994x1024.jpg 994w\" sizes=\"auto, (max-width: 439px) 100vw, 439px\" \/><\/a>13. Dimensions des vis \u00e0 m\u00e9taux. Cas avec empreintes cruciformes H ou Z et m\u00eames dimensions.<\/h3>\n<p><span style=\"font-family: Verdana;\">Exemples de d\u00e9signation : vis \u00e0 t\u00eate hexagonale ISO 4014-M 12&#215;80-4.6 (vis H partielle\u00ac ment filet\u00e9e, d = 12, L = 80, classe 4.6);<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">vis QM12-60, 4.8 (vis \u00e0 t\u00eate carr\u00e9e, d = 12 , L = 60, classe 4.8).<\/span><\/p>\n<p><a href=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1400\" src=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser2-173x300.jpg\" alt=\"visser2\" width=\"324\" height=\"562\" \/><\/a><\/p>\n<p><b>\u00a02. Classes de qualit\u00e9 des vis et des \u00e9crous, \u00e9l\u00e9ments de calcul<\/b><\/p>\n<h3><a href=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1401\" src=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser3-300x128.jpg\" alt=\"visser3\" width=\"300\" height=\"128\" srcset=\"http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser3-300x128.jpg 300w, http:\/\/alexandrewack.fr\/wp-content\/uploads\/2015\/04\/visser3-1024x438.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>14. Principales propri\u00e9t\u00e9s des vis et des goujons (NF EN 28839, ISO 8839).<\/h3>\n<p><span style=\"font-family: Verdana;\">Il existe des classes de qualit\u00e9 pour certaines vis (H, CHC.) et \u00e9crous. Plus le mat\u00e9riau est r\u00e9sistant, plus la classe est \u00e9lev\u00e9e.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">a) Cas des vis La classe est symbolis\u00e9e par deux nombres. Le premier est le centi\u00e8me de la r\u00e9sistance minimale \u00e0 la rupture par traction (R<sub>r<\/sub>) du mat\u00e9riau en N\/mm<sup>2<\/sup>. Le second repr\u00e9sente 10 fois le rapport entre la limite \u00e9lastique (R<sub>e<\/sub>) minimale et la r\u00e9sistance \u00e0 la rupture R<sub>r<\/sub>.<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Exemple :<\/span><\/p>\n<p><span style=\"font-family: Verdana;\">vis de classe 8-8 R<sub>r<\/sub> (mini) = 100 x 8 = 800 N\/mm<sup>2<\/sup><\/span><\/p>\n<p><span style=\"font-family: Verdana;\">R<sub>e<\/sub> (mini) = R<sub>r<\/sub> x Y\/10 = 800 x 8\/10 = 640 N\/mm<sup>2<\/sup><\/span><\/p>\n<p><span style=\"font-family: Verdana;\">Remarque : le produit des deux nombres es est \u00e9gal \u00e0 R<sub>e<\/sub> en daN\/mm<sup>2<\/sup>.<\/span><\/p>\n<h2 style=\"text-align: center;\">la suite<a href=\"http:\/\/www.zpag.net\/Tecnologies_Indistrielles\/visserie.htm\"> ICI<\/a><\/h2>\n<p>&nbsp;<\/p>\n<h6 style=\"text-align: left;\">ou ici<\/h6>\n<h6 style=\"text-align: left;\"><a href=\"http:\/\/www.technocalcul.com\/FR\/resistance_meca_vis.html#inox\">http:\/\/www.technocalcul.com\/FR\/resistance_meca_vis.html#inox<\/a><\/h6>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ici un bon cours PDF sur les VIS :\u00a0http:\/\/metaluver.wifeo.com\/documents\/les-vis-pdf.pdf Une petite vid\u00e9o sur pour comprendre le dessin d&rsquo;une vis en construction: 1. Vis d&rsquo;assemblage \u00e0 m\u00e9taux ici\u00a0 Le serrage le plus \u00e9nergique est obtenu par les t\u00eates H et Q (Q est peu utilis\u00e9e en m\u00e9canique) puis par les vis CHC qui pr\u00e9sentent l&rsquo;avantage de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":651,"menu_order":3,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-1372","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/pages\/1372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1372"}],"version-history":[{"count":8,"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/pages\/1372\/revisions"}],"predecessor-version":[{"id":1835,"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/pages\/1372\/revisions\/1835"}],"up":[{"embeddable":true,"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=\/wp\/v2\/pages\/651"}],"wp:attachment":[{"href":"http:\/\/alexandrewack.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}